Home › Articles › ZZZ – THE GUIDING SYMPTOMS OF OUR MATERIA MEDICA By CONSTANTINE HERING, M.D. Print ← Back to Articles Article ZZZ – THE GUIDING SYMPTOMS OF OUR MATERIA MEDICA By CONSTANTINE HERING, M.D. Zinc. Zing. Ziz. Zincum (Zincum Metallicum) —– Zinc. Zingiber (Zingiber Officinale) —– Zing. Zizia (Zizia Aurea) —– Ziz. ® 2002